/** ~~~~~ * Created with the AppyBuilder Code Editor. * This is a template for basic Extension. * Modify this template to customize your extension. * * **** NOTE: DO NOT use a package name. * **** The package name will be created for you automatically. * **** Adding a package name will cause a compile error */ import android.content.Context; import android.util.Log; import com.google.appinventor.components.annotations.*; import com.google.appinventor.components.runtime.*; import com.google.appinventor.components.common.ComponentCategory; @DesignerComponent(version = 1, description = "Calculates some basic geometrical shapes'areas." + "Created with AppyBuilder. Create your own here:
https://editor.appybuilder.com
", category = ComponentCategory.EXTENSION, nonVisible = true, iconName = "https://lh3.googleusercontent.com/ogw/ADea4I42VqEybFK87QSOLCsJXghDvdf0uhA3Rya5Li0g=s32-c-mo") @SimpleObject(external = true) public class Maths extends AndroidNonvisibleComponent { private ComponentContainer container; /** * @param container container, component will be placed in */ public Maths(ComponentContainer container) { super(container.$form()); this.container = container; } @SimpleFunction(description = "Calculates the area of a square.") public double AreaOfSquare (double side) { return side * side; } @SimpleFunction(description = "Calculates the perimeter of a square.") public double PerimeterOfSquare (double side) { return side * side; } @SimpleFunction(description = "Calculates the perimeter of a rectangle.") public double PerimeterOfRectangle (double length, double width) { return length * width; } @SimpleFunction(description = "Calculates the area of a rectangle.") public double AreaOfRectangle (double length, double width) { return length * width; } @SimpleFunction(description = "Calculates the area of a triangle.") public double AreaOfTriangle (double base, double height) { return base * height / 2; } @SimpleFunction(description = "Calculates the perimeter of an isoceles triangle.") public double PerimeterOfIsocelesTriangle (double leg, double base) { return leg + leg + base; } @SimpleFunction(description = "Calculates the perimeter of an equilateral triangle.") public double PerimeterOfEquilateralTriangle (double side) { return side * 3; } @SimpleFunction(description = "Calculates the area of a right-angled triangle.") public double AreaOfRightIscocelesTriangle (double side) { return side * side / 2; } @SimpleFunction(description = "Calculates the area of a trapezium.") public double AreaOfTrapezium (double upper, double lower, double height) { return (upper + lower) * height / 2; } @SimpleFunction(description = "Calculates the area of a circle.") public double AreaOfCircle (double radius) { return radius * radius * 3.14; } @SimpleFunction(description = "Calculates the radius of a circle from a diameter.") public double Radius (double diameter) { return diameter / 2; } @SimpleFunction(description = "Calculates the diameter of a circle from a radius.") public double Diameter (double radius) { return radius * 2; } }